Table 5.
Postoperative outcomes
| Uncomplicated appendicitis (n = 650) | Complicated appendicitis (n = 187) | Odds ratio† | P ‡ | |
|---|---|---|---|---|
| Length of postoperative hospital stay (days)* | 1.08 (0.75–1.55) | 3.56 (2.14–5.13) | < 0.001§ | |
| Length of postoperative antibiotic treatment (days)* | 0.50 (0.50–1.09) | 10.11 (8.32–12.08) | < 0.001§ | |
| Clavien–Dindo grade at 30 days | ||||
| No complications | 612 (94.2) | 160 (85.6) | 0.37 (0.22, 0.62) | < 0.001 |
| I | 6 (0.9) | 8 (4.3) | 4.80 (1.64, 14.00) | 0.002 |
| II | 25 (3.8) | 10 (5.3) | 1.41 (0.67, 3.00) | 0.366 |
| III | 7 (1.1) | 7 (3.7) | 3.57 (1.24, 10.32) | 0.012 |
| IV | 0 (0) | 2 (1.1) | – | 0.008 |
| V | 0 (0) | 0 (0) | – | – |
| Surgical-site infection | ||||
| None | 629 (96.8) | 174 (93.0) | 0.45 (0.22, 0.91) | 0.023 |
| Superficial | 8 (1.2) | 5 (2.7) | 2.21 (0.71, 6.82) | 0.160 |
| Deep | 0 (0) | 1 (0.5) | 0.22 (0.20, 0.25) | 0.062 |
| Organ space | 13 (2.0) | 7 (3.7) | 1.91 (0.75, 4.85) | 0.169 |
Values in parentheses are percentages unless indicated otherwise;
*values are median (i.q.r.); †values in parentheses are 95 per cent confidence intervals.
‡Pearson’s χ2 test, except
§Mann–Whitney U test.